Holder for incandescent electric lamps



(No Model.) 2 Shets-Sheet 1.

W. STANLEY, Jr.

HOLDER 'FOR INGANDESGENT ELEUTRIG LAMPS. N0. 330,269. Patented Nov. 10,1885.

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HOLDER FOR INOANDESOENT ELECTRIC LAMPS.

No. 330,269. Patented Nov. 10, 1885.

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ITED STATES \VILLIAM STANLEY, JR., OF PITTSBURG, PENNSYLVANIA.

HOLDER FOR'INCANDESCENT ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 330,269, dated November10,1885.

Application filed August 22, 1885. Serial No. 175,041. (No model.)

ing them in position, and at the same tiniefor establishing properelectricconnections between the supply-conductors and the electricterminals of the lamp.

The object of the invention is to provide a simple and inexpensiveholder, to which the lamp may be easily applied without the use of anytechnical skill whatever, which shall insure the positive completion ofthe electrical connections, and which will at the same time not beliable to disarrangement by constant use.

ed substantially in the following manner: A cylindrical tube of brass orother suitable material is slotted at one end, for the purpose ofproviding resilient arms for receiving and grasping the neck of thelamp-globe. Around the end of the tube which receives the neck of theglobe is formed a groove, into which it is designed that a correspondingannular fillet or bead upon the neck of the globe shall enter. Withinthe tube is fixed a non-conducting block or support carrying twoyielding contact-springs. The terminals of the leadingin wires of thelamp are pressed firmly against these springs when the globe is insertedinto the holder. A convenient form of circuit closing and interruptingdevice, provided with a suitable thumb-piece, is also provided for thepurpose of making and severing the connections of one of the mainconductors with one of the contact-springs, in order to light orextinguish the lamp. A metal plate, provided at its center with a hollowscrew, is inserted in the end of the tube opposite the globe, forattaching the holder to its supporting bracket or fixture. Through thisplate it is designed that the supply-conductor shall pass.

In the accompanying drawings, Figure 1 is an elevation, and Fig. 2 asection, of the holder The invention comprises a holder constructandlamp. Fig. 3 shows the lamp detached from the holder. Figs. 4, 5, 6, 7,8, and 9 are views of the circuit controller and conductor. Figs. 10 and11 show details of the holder.

Referring to the drawings, A represents a tube, preferably ofbrass,though it may be of other metal or of other suitable material, such ashard rubber. In one end of the tube there are cut a number oflongitudinal slits, a, which permit the intervening sections, a, of thewall of the tube to spring outward. Au annular groove or recess, 12, isformed around the exterior circumference, near the end of the tube soslotted, into which groove it is designed that a correspondingprojection, forming a fillet or bead upon the neck of the globe of thelamp 0, shall fit, the resistance of the springs serving to hold itsecurely in this position after its introduction. In the opposite end ofthe tube Athere is inserted a non-eonducting plug or support, D. Theportion of the tube which receives this plug may, with advantage, be ofslightly greater diameter than the upper portion of the tube. By suchconstruction the plug is prevented from slipping into the upper portionof the tube and out of its proper place. Upon this support there areplaced two metallic plates, 6 and 6 These are securedupon opposite sidesof the plug,

and carry resilient contact arms or springs c and e", respectively,which extend outward in a spiral direction. These contact-springs aredesigned to be placed in electrical connection with the two leading-inwires f and f 2 of the lamp-globe, when such globe is inserted in theholder. The ends of the leading-in wires are preferably looped ordoubled, as shown at f f, for the purpose of providing more rigidcontacts. The parts are so adjusted that when the lamp-globe is inposition the ends f f will press against the respective spiral contact-arms e and c, which, being resilient, will I yield sufficiently toinsure good electrical conneetions. Asupply or main eonductor,11, isconnected directly with the plate 6 The corresponding conductor 12, isconnected with a contact-spring, f (See Fig. 9.) A contact point, 7L2,carried by the shaft of the key F, is in metallic connection with asquare block, h, also carried upon the key F, and this point is designed to be brought into contact with the spring f by turning the keyby means of the thumb-screwy. The pressure of a resilient extension, h,of the plate 6 against the square block h insures both a good electricalconnec-- tion'and the stopping of the key in either one of twopositionsthat is to say, so that the fiat portion of the handle f 5 willbe either vertical or horizontal. When the key is in the position shownin Fig. 5, the circuit will be interrupted. In other words, the lightwill be turned off but when in the position shown in Fig. 4 the circuitwill be closed from the conductor 12 to the contact spring f thencethrough the pin or point h stem of the key F, block h, resilientextension h, plate 6, and arm 0 the light filament by way of theconductors ff, thence through the arm 6 and plate 6 to the conductor 11.

The lower end-of the plug or support D is inserted into a slotted plate,K, which closes the lower end of the tube. This plate is held inposition by a coupling-joint consisting of a groove, is, in the tube anda projection, 70, upon the plate, very similar to that employed forholding the lamp-globe at the upper end of the holder. An opening, k isformed in the lower end of the tube, for receiving the arm of the keyand permitting it to turn freely therein.

The conductors for conveying the electricv current to the lamp are ledto an opening, 10, in the plate K, and they pass through suitableapertures in the plug D to the respective springs or contacts. A hollowscrew-thread, p, is formed in the opening for securing the attachment ofthe holder to a corresponding fixture.

Iclaim as my invention- 1. The combination, substantially ashereinbefore set forth, with a holder for incandescent electric lights,having resilient arms in which there is formed an annular gro0ve, of aglobe having an annular bead or fillet fitting within said groove formedupon its neck.

2. The combination, substantially as here-.

inbefore setforth, with the globe of an incandescent electric light,having an annular bead or fillet formed upon its neck, of a tubularholder having resilient arms and a corresponding annular recess formedtherein, con: tact-points against which the leading-in conductors of thelamp are pressed when said lamp is held in said holder, and acircuit-controller for making and interrupting the circuit of theconductors through said contact-points.

3. An incandescent electric light holder consisting of a tube havingresilient arms formed at each end, a non-conducting support insertedwithin the same, a yielding contact point or spring carried upon saidsupport, a circuit-controlling device for making'and severing theconnections therewith, and a metalresilience of the arms of the corresp)nding end, substantially as described.

4. A holder for incandescent electric lights, consisting of a tubeconstructed with resilient fingers or arms at one end, twospirally-shaped contact-springs, one of which is in permanent connectionwith a supply-conductor, a circuithe plate held in one end of saidtubevby the controlling key, a contact-spring for govern- 7o ing theposition of said. key, and a contactpoint placed in electricalconnection with the other spring or separated therefrom, according tothe position of said key.

5. The combination, substantially as hereinbefore set forth, of the tubeA, having the resilient arms a, the key F, the yielding springs e and 6the support for said springs fitting within an enlarged portion of saidtube, and the plate P, all organized substantially as described.

In testimony whereof I have hereunto subscribed my name this 10th day ofAugust, A.

WILLIAM STANLEY, JR.

Witnesses:

DANL. W. EDGEOOMB, OHARLEs A. TERRY.

